How to Completely Disable ‘Notifications Access’ via Group Policy in Windows 11

Windows 11 includes a robust, OS-level permissions architecture designed to broker application access to the system’s “Notifications” subsystem. The Notifications Access API allows third-party UWP (Universal Windows Platform) and modern Windows apps to read, modify, or interact with notifications generated by other applications, as well as to push their own toast notifications to the Action Center. While useful for unified communication dashboards or smart watch companion apps, unfettered access to the notification stream represents a catastrophic operational security (OPSEC) and data exfiltration liability in highly restricted enterprise, financial, or military environments (such as SCIFs). A compromised application could silently intercept sensitive data displayed in a toast notification (such as a 2FA code, a snippet of a confidential email, or an IM message) and exfiltrate it.

This guide explains how to completely disable ‘Notifications Access’ via Group Policy in Windows 11, enforcing a strict, system-wide block that prevents any application from reading or interacting with the OS notification broker.

Disable Notifications Access via Group Policy

To enforce a strict configuration that explicitly strips the OS of its ability to broker notification read/write access to third-party applications and overrides any user-defined privacy settings in the modern Settings app, we must deploy an administrative template. Note that this requires Windows 11 Pro, Enterprise, or Education editions.

1. Log into Windows 11 with an Administrator account.
2. Press the Windows Key + R to open the Run dialogue box.
3. Type gpedit.msc and press Enter to launch the Local Group Policy Editor.
4. In the left-hand navigation pane, strictly follow this exact path:

   Computer Configuration > Administrative Templates > Windows Components > App Privacy

5. In the right-hand pane, locate the policy named Let Windows apps access notifications.
6. Double-click the policy to open its configuration window.
7. Select the radio button next to Enabled.
8. Under the Options section, locate the dropdown menu labeled “Default for all apps”.
9. Explicitly select Force Deny from the list. (By explicitly setting this to Force Deny, we instruct the Windows API broker to proactively intercept and reject any process attempting to hook into the Action Center or read the toast notification stream, overriding user preference and ensuring a cryptographic block on notification interception).
10. Click Apply, then click OK.

Verify the Configuration Lockdown

Group Policy changes modifying core OS privacy APIs require the operating system to update its local security policy state.

Open Command Prompt as Administrator and run gpupdate /force. To verify the restriction is actively enforced, launch the Windows 11 Settings app and navigate to Privacy & security > Notifications (under App permissions). You will immediately notice that the master toggle for allowing apps to access notifications is completely greyed out and locked in the “Off” position. At the top of the window, a red or yellow banner will prominently declare, “Some of these settings are managed by your organization.” Furthermore, launching any application that previously relied on intercepting system notifications (like a third-party smartwatch sync tool) will result in immediate API failures or prompts stating that access has been administratively revoked, confirming total OPSEC compliance.